Accelerator Pedal Sensor, Basic Function - GF30.20-P-2000A

WARNING: This page is about a different car, the 2020 Mercedes-Benz SLC43 AMG, 2019 Mercedes-Benz SLC43 AMG, 2018 Mercedes-Benz SLC43 AMG, and 2017 Mercedes-Benz SLC43 AMG. However, it is still accessible from the selected car via links, so may be relevant.

Engine all (CAR)

Fig 1: Accelerator Pedal Sensor Components Location - Engine All Car (Shown For Model 177)

Courtesy of MERCEDES-BENZ USA

Sample display for model 177

Overview

This document contains information on:

General
Function

General

The accelerator pedal sensor converts the mechanical actuation of the accelerator pedal into a voltage signal that corresponds to the accelerator pedal position.

Task

The accelerator pedal sensor is integrated in the accelerator pedal pivot. The accelerator pedal sensor consists of a shaft with ring magnet. The ring magnet rotates in a printed circuit board with stator in two fixed Hall elements. This produces a change in the voltage.

Limp-home mode

If the signal voltage of a Hall element fails, the signal voltage of the second Hall element is used and the engine enters limp-home mode.